/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dx.merge;

import com.android.dx.io.DexBuffer;
import com.android.dx.util.Unsigned;

public final class TypeList implements Comparable<TypeList> {

	public static final TypeList EMPTY = new TypeList(null, new short[0]);

	private final DexBuffer buffer;
	private final short[] types;

	public TypeList(DexBuffer buffer, short[] types) {
		this.buffer = buffer;
		this.types = types;
	}

	public short[] getTypes() {
		return types;
	}

	public int compareTo(TypeList other) {
		for (int i = 0; i < types.length && i < other.types.length; i++) {
			if (types[i] != other.types[i]) {
				return Unsigned.compare(types[i], other.types[i]);
			}
		}
		return Unsigned.compare(types.length, other.types.length);
	}

	@Override
	public String toString() {
		StringBuilder result = new StringBuilder();
		result.append("(");
		for (int i = 0, typesLength = types.length; i < typesLength; i++) {
			result.append(buffer != null ? buffer.typeNames().get(types[i])
					: types[i]);
		}
		result.append(")");
		return result.toString();
	}
}
